DE2606258A1 - EQUIPMENT FOR MANUFACTURING OR SHAPING OF FLOOR MATS OR PANELS IN PARTICULAR FOR VEHICLE INTERIORS - Google Patents

Description

DIPL.-CHEM. DR. VOLKER VOSSlUS PATENT ADVOCATE

toONCHEN 86, Λ 7 Γ Γ Π ^ ^-

SIEBERTSTHASSE 4 - ¹ '' ^U "" PHONE: 4T «075

CABLEAODRESS: BENZOL PATENT MÖNCHEN TELEX 5-29 * 53 VOPAT D

u.z .: L 588 + a Case-I

TEXTILFORM S.A. Luxembourg

Device for the production or shaping of floor mats or panels, in particular intended for vehicle interiors

Priority: February 17, 1975, Italy, No. 674OO-A / 75

609835/0715

The present invention relates to an apparatus for the manufacture of in particular Floor mats or panels intended for vehicle interiors, which are several by pressure medium drives has actuated presses with three-dimensional molds for thermoforming the floor mats, '

; ■ ·

In general, such machines are known and suitable presses are described in U.S. Pat. Patent descriptions No. 3,635,629 and 3,078,516. The floor mats are particularly useful for vehicle interiors, e.g. intended for the driver's cab of a truck. The surface of the floor mat preferably consists of one Fabrics, such as a boucle or pile carpet, and the back can be used as a support layer made of thermoplastic Be made of plastic. The unshaped floor mat becomes malleable by heating. Usually the unshaped Floor mat, which is in the form of a flat plate or sheet, is heated and then placed in a press given. The press closes relatively slowly so that the floor mat is pulled into the correct shape can ..- - She has to stay in the press until she is for further treatment has cooled down sufficiently. While the floor mats remain in the press until they are ready for further treatment has cooled down sufficiently. Also, while the floor mat is in the press, your Edges trimmed and cutouts made, for example for shift and brake levers and seat brackets to serve.

This is done by means of hot tools with a suitable cross-section, which pass through the floor mat be pushed, with the floor mat if necessary

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BATH ORIGINAL

Cutting tools is cut.

The floor mat therefore remains in the press for a long time and it is common in practice that a single heater supplied a number of presses. Likewise, e.g. a single oven or boiler can be used to heat the tools used to make the cutouts in the floor mat.

Disadvantages of such known arrangements are therefore long transport routes between the heating point for the floor mats and at least some presses and between the. oven for the tools and the presses.

This requires long working hours until production of the pre-formed floor mats. Various devices are also known which have rotatable parts. To the Example there is a machine for molding small plastic items, which has a plurality of forming heads on a turret head.

Another device shows several to a rotating body composite presses used in the formation of foamed plastic sheets.

In a further known device, several molded parts of a vacuum press are mounted on a turntable. However, all of these known devices are different from the inventive training and not for Appropriate solution of the given tasks.

The invention is therefore based on the object of creating a device which requires significantly less working time for the same machining operations.

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.ir.

According to the invention it is therefore proposed that the presses be on a turntable with a vertical axis and a flat surface that is on the same level or one step higher or lower than the factory floor and receives operators are, wherein the turntable has a drive for its slow rotation, and to the turntable a station for loading the presses with unshaped Floor mats and a station for the removal of the finished molded floor mats adjoins, and that coaxially with the turntable a rotatable distributor for the connection of the presses to the stationary pressure medium supply is arranged.

One advantage of the turntable is that the floor mats only have to be transported short distances.

It has been shown that when using the turntable according to the invention, production quadruples, i.e. four times as much floor coverings per hour with the same presses, heaters, the same furnace and the same personnel were generated.

The rotatable distributor is advantageous for presses which have cooled or heated compression molds a stationary coolant or heating medium supply with a supply line and a return line of the heating or Connect the cooling jacket of the molds.

The distributor is advantageously suspended coaxially over the turntable. Assign the presses to opposite one another Side parts holding devices on which

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the corresponding edges of the floor mat during the rest of the process clamp, the holding devices can have smooth-surfaced clamping jaws, which are advantageously on the lower Support frames are attached and are operated by pressure medium drives so that they exert a predetermined holding force. Thus, when the molds are closed, the floor mat can be pulled against the holding force between the clamping jaws.

The holding devices can advantageously also clamp the floor mat without allowing it to slip. Then you can the holding device against a force acting away from the mold by the tensile forces occurring during the Preßvorgahges move the floor mat towards the mold.

For this purpose, the holding device advantageously has a number of gripping pins which are mounted on a support body which is elastically movable in the plane of the tensile forces of the floor mat and which, for example, are tensioned by tension springs against the tensile forces of the floor mat. is \.

The holding device can also conveniently consist of two parallel-guided support bodies with gripping pins, which by means of a pressure medium drive can be pressed onto the floor mat lying in between.

The use of a chain as a support body is advantageous, since this is movable in the plane of the tensile forces of the floor mat, on the other hand it is stiff along the pressure line and a good clamping guaranteed.

In a further preferred embodiment, the support bodies, in particular the chains, are spaced apart with levers provided, which in turn are connected via an axis of rotation. The support bodies can be pivoted about the axis of rotation and are pressed against each other.

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The invention will now be described using an exemplary embodiment, with reference to the drawing figures Is referred to. The figures show:

Fig. 1: a schematic plan view of the invention Facility;

2: a perspective view of one of the presses on the turntable in the open position;

Fig. 3: the side view of the press of Figure 2, wherein a small part is shown in section;

Fig. 4 is a section along the line IV-IV of Fig. 3;

Fig. 5: a partial section of another press the turntable, showing a clamping device that pulls when the press is closed exercises the floor mat;

Fig. 6: "The plan view of a lower molded part of another Press on the turntable, showing another clamping device that closes the press Pulls on the floor mat;

FIG. 7: a section along the line VII-VII in FIG. 6;

FIG. 8: is similar to FIG. 7, but shows a different holding device for the floor mat;

FIG. 9: is similar to FIG. 7 and shows a further holding device for floor mats;

Fig.10: shows a cross-sectional view of another press and

Fig.11: is a schematic section through a rotatable distributor which is coaxial with the turntable axis runs.

The general design of the device can be seen in FIG.

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The in. The large diameter turntable 1 is rotatable about a vertical axis and has a flat surface which is level with the factory floor. It is surrounded by a stationary ring 2. The turntable 1 can also be arranged above or below the level of the factory floor, provided that the operators can enter the turntable 1 without difficulty. Known devices can be used for the rotational movement of the turntable 1. For example, a vertical stub axle is attached to ^{the floor below the 1 turntable.} At the bottom of the turntable 1, annularly arranged wheels are attached, which run in ruts below the turntable 1. Some of these wheels are driven. The drive motor 1a (or the motors) is mounted on the turntable 1 and is supplied with power via brushes and slip rings on the stub axle.

For example, the turntable has a peripheral speed of 20-25 m / min. The movement can be gradual be. The walking speed can be monitored by an operator with the aid of a stationary control panel 3 will. In practical operation, a time of 6 2 ° is 7 minutes for one revolution of the turntable 1 proved to be advantageous.

On the turntable several presses 4, 4a, 4b .... are mounted for thermoforming the floor mats A, which three-dimensional Include molds. The presses can be of the same or different types. This depends on the * work program away.

Various press types are shown in FIGS. 2 and 4, 5, 6 and 9 and 10.

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The station 5 for supplying the turntable 1 with unformed floor mats A is a stationary infrared oven shown, which adjoins the turntable 1. At a station 6, the fully formed floor mats A removed from the turntable again. This StsfcLon 6 can also only be a certain part of the factory floor and from here the floor mats A for storage or 'further processing can be taken.

Each press 4,4a, 4b ... has a lower part, which consists of a support frame 7 and the mother mold 8.

The master mold 8 of each press 4, 4a, 4b .... is advantageous with a coat 9 or the like. for the circulation of coolants or heaters, usually liquids. The coat 9 . -. is connected to supply and return lines 10, 11.

The upper part of each press 4,4a, 4b consists of

a support frame 12 and the punch 13 matching the mother mold 8. As shown in FIGS. 2 and 3, the upper Part of each press, which is mounted on bolts 14, can be folded onto the lower part, with the opening or closing torque is generated by at least one pressure medium drive 15. This pressure medium drive 15 is with the upper and lower support frame 7,12 connected via pivot pins.

The floor mat A is deep-drawn into the mother mold 8 by mechanically pressing the two compression molds, the mother mold 8 and the punch 13, against one another. Hold for the relevant edges of the floor mats A, depending on the form in which the floor mat A must be moved, and therefore, depending on the design of the two molds, (. 4,4a, 4b.) Presses on at least two opposite sides of the holding devices can , which during the pressing process a considerable tension on the

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Exercise floor mat A. This is not necessary for simple shapes when operators use the floor mat A when Keep folding the presses taut on both sides. In addition, the holding devices may replace them lack of firmness of the floor mat A and reduce the need for qualified personnel.

In the press shown in FIGS. 2 to 4, the holding devices have smooth-surfaced clamping jaws 21, 22. the Jaws 22 are in the form of angular sections along that side of the press, by means of hinges 23 on the lower for the presses rotatably arranged. If necessary, the jaws 21,22 can have mating bolts and openings be provided as in FIG. The movement of the clamping jaws is controlled by pressure medium drives 24 connected to the lower Support frame 7 and the clamping jaws 22 are connected. In the preferred embodiment, the pressure medium drives exercise 24 exerts a predetermined clamping force on the clamping jaws 21, 22. The floor mat A is when closing the press between the Clamping jaws 21,22 held. Those parts of the floor mat A that have to be pulled very deep when pressing can through the clamping jaws 21,22 follow. The pressure force of the pressure medium drives 24 can be regulated in a known manner.

The laterally arranged jaws 21,22 form a right angle to the floor mat A, while the to the Ends of the floor mat A arranged clamping jaws 21,22 are arranged parallel to the same. With this optional arrangement the holding force and the tensile force when passing through the floor mats for the pressing process can be better controlled.

The holding devices shown in FIG. 5 are similar to those in FIGS. 2 to 4 and are used for these parts the same reference numbers are used. However, the clamping jaws 21, 22 also have corresponding pins 25 and holes 26,

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so that the clamping jaws 21, 22 hold the floor mat A without it slipping when the press is closed. Nevertheless, the clamping jaws 21, 22 are against the closing force the press supported resiliently. To achieve this, the hinges 23 are attached to rotatable levers 27, which in turn are attached to the lower support frame 7 via pivot pins 29. The lever 27 is also based on a pressure medium press 30 on the support frame 7.

If the press now closes, the floor mat A is pulled into the mother mold and the clamping jaws 21, 22 go after, since the levers 27 can be pivoted about the pivot pins 29. The clamping force of the clamping jaws 21, 22 on the floor mat A can be regulated via the pressure medium press 30, which "has the function of a damping cylinder. It can be designed so that a constant force is required for the entire stroke, or the damping force increases progressively at. The pressure medium press 30 can, however, also be replaced by any other device, for example by a long-stroke helical spring or the like.

The tensioning and engaging devices of FIGS. 6-9 comprise a movable part, which at least consists of a chain which extends along the corresponding side of the press. The chain or chains 31 can all around the Pass around the press, but preferably interruptions are provided at certain intervals as in FIG. 6. Chains are movable in one plane (the plane of the drawing in the case of FIG. 6) while they are perpendicular to it Level are not movable. The chains 31 shown consist of alternating double and single links. In in each case the chain or chains have 31 gripping pins 32, which grip the edges of the floor mat A, and tension springs 33, which pull the gripping pins 32 away from the press. These tension springs 33 are mounted on the lower support frame 7.

609835/0785

The gripping pins 32 are juxtaposed at short intervals mounted, so that excessive warping is always prevented parts of the floor mat A, which are between the gripping pins 32 are located. The use of the chain or chains 31, which act as a mounting base and support element of the Serving gripping pins 32 is a cheap way to get one to arrange a large number of gripping pins with a small distance from each other and to create a control option, how far the floor mat A is pulled into the mold, since the position of each individual gripping pin 32 from the neighboring Gripping pin 32 mi ^ depends.

As shown in Figure 7, there are two parallel, closely spaced chains 31 with elements that the Hold the floor covering in between, in this particular case the elements are the gripping pins 32 and corresponding holes, which are attached to narrow bands 34 which are welded to corresponding chains. At certain intervals the two chains 31 are rotatably connected via an axis of rotation 35. A small pressure cylinder 36 can hold the chains Move apart and together so that you can grasp floor mat A.

In the case of the variant of FIG. 8, the pins and holes of FIG. 7 are replaced by pressure pad elements, . Which are attached to narrow strips 37, which in turn are welded to the chains 31 and over them protrude, the construction is in principle the same. Pressure cylinder 36 must be adequately dimensioned so that the floor mat A is prevented from slipping between the gripping elements when the press is closed.

Fig. 9 shows a further variant with only a single chain 31, the gripping pins 32 on the chain links are welded on. If the laying of the floor

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matt A 'on the gripping pins 32 makes difficulties, this can be brought into the correct position with a wooden hammer, for example.

Fig. 6 shows that when the press is closed, more floor mat A is drawn into the mold in some places is, and that the tension springs 33 exert the required train. Fig. 10 is a schematic illustration another press, the individual parts being the master mold 8, the jacket 9 and the punch 13. Closing and pressing devices around the master mold 8 can be used as in any other press as in the figures Be 2-9. The press of FIG. 10 has a two-part closing movement and the punch 13 has an auxiliary shape 38 and a "pressure cylinder 39 which the secondary shape 38 radially to the circular closing movement of the punch 13 emotional. During the closing of the press, the punch 13 is in a first closing process downwards into the mother mold 8 brought, while in a second closing process, the secondary shape 38 radially into the recess of the mother mold 8 is pressed. In this way, the floor mat A can be pressed into a "deeply embossed": R> rm as in FIG.

All hydraulic cylinders for opening and closing the press, as well as the actuation of the gripping devices for the floor covering, receive the pressure medium (normally Air) from a rotatable manifold 41 shown in FIG will. The supply and return lines 10 and 11 for Cooling and heating liquid are connected to the rotatable distributor. The distributor 41 has a fixed central part 42, in which three adjacent lines 43, 44 and 45 are embedded, which are used for the supply of pressure media, Heating or cooling means and the drainage of cooling or heating means are used.

609835/0785

In practice, the supply and return lines 43, 44 and 4.5 can around the axis of the central part 42 around equally spaced. There is an advantage in making sensible changes to the design in that the number of lines can be changed. For example could be in a simple construction only a single supply line for the supply of pressure medium be present, or the number of lines could also be exceed three. The middle part 42 has at its upper end connections for the lines 43, 44 and 45, which in turn with pipelines to a stationary supply for "the pressure medium and cooling or heating medium are connected. The middle part 42 is with the help of the pipelines on a stationary structure, for example a roof rack of the Factory building suspended above the turntable 1.

In detail, this middle part 42 is slightly conical and has two steps. Around the middle part 42 is located an outer housing 46 which is fastened to the turntable 1 and which is attached to the central part 42 with the aid of radial bearings 48 and 49 is stored.

A thrust bearing can be installed with slight modifications to the structure if necessary, but usually the radial bearings 48 and 49 provide sufficient axial support for the low axial forces that occur during operation may occur. As can be seen, the outer housing 46 includes three annular chambers 51, 52 and 53 in axial direction Distance that are connected to the cylinders of the press, the supply lines 10 and the return lines 11. Each annular chamber 51, 52 and 53 is against the central part 42 sealed with the aid of ring seals 54 of conventional design. Connect radial bores in central part 42 the corresponding lines 44 and 45 with the ring

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formal chambers 52 and 53.

Fig. 1 also shows a furnace 61 which is attached to the turntable 1 and which the tools mentioned, - make holes in the floor mat A while this is in the corresponding presses 4,4a, 4b., ... The tools, the cross-section of which corresponds to the hole they are supposed to make, are set to 300 ° to 400 ° C or even Heated red-hot and then run through the shaped holes 62 in the punch 13 (see FIGS. 2 and 4), through the floor mat A and preferably through the holes or depressions 63 in the mother mold 8. The function of the machine is now on a Example explained:

The floor mat A can be made of felt, boucle or a tufted covering Be made of nylon or polyester, such as a mat made of nylon structure that is converted into a 50:50 ww nylon polyester Base is woven from felt.

A thin layer of polyethylene is applied to the base of the mat by spraying polyethylene powder, then the powder is heated to the melting temperature, with which this layer is applied. The solid floor mat is then roughly cut to the correct size and placed by hand in the infra-red oven 5 and then set to 80 or 90 Degree C warmed. While the turntable 1 is still standing, the floor mat A is taken out of the infrared oven 50 by hand and placed in the press next to it (e.g. 4e in Fig. 1). Then the rotary motion of the turntable is over the Control panel 3 initiated. If present, the clamping jaws 22 close and press the edges of the floor mat A against the clamping jaws 21. For this purpose, an operator actuates a valve, on the press itself, and actuated another valve Valve on the press starts the press closing process. Are there no jaws 21,22 or jaws along the sides of the floor mat A is present, the corresponding edges of the floor mat A are set by hand with the greatest possible force held to prevent wrinkles from forming. The protruding parts of the floor mat A are on the edges

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cut along the press, and with the help of the tools heated in the furnace 61 holes are made in attached to the floor mat A when the respective press is currently at the kiln 61. Bigger ones. Holes can be made in the floor mat using a cutter, whereby these larger holes are defined in outline by templates in the lower and upper molds 8, 13. In the meantime, the floor mat A is cooled with the help of cold water, which is passed through the cooling or Heating jacket 9 flows. Now the corresponding press arrives at station 6, the floor mat A is at 40 to 30 degrees C. chilled and set in their new form. The press is opened and the molded floor mat A is made the press and taken from the turntable 1.

During this process, the other presses on the turntable 1 are loaded by the designated staff and served. The staff can stand on the turntable 1 next to the presses 4,4a, 4b ... and the The speed of rotation of the turntable 1 is sufficiently low that the personnel enter the turntable and can leave without stopping.

The details of the present invention can be found in with reference to the above description and the attached figures can be changed without further ado, without the scope of the present patent application to blow up. For example, as in FIG. 10, the floor mat A can be one layer obtained from acoustically and / or thermally effective insulating material, which is applied before loading the press.

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Claims (7)

Claims Device for the production or shaping of floor mats or cladding, in particular intended for vehicle interiors, which has several presses operated by pressure medium drives with three-dimensional molds for thermoforming the floor mats, characterized in that the presses (4, 4a, 4b...) On a turntable ( 1) with a vertical axis and a flat surface that is on the same level or one step higher or lower than the factory floor and accommodates operators, the turntable (1) has a drive (1a) for its slow rotation, and on the turntable (1) adjoins a station (5) for loading the presses (4,4a ...) with unformed floor mats (A) and a station (6) for removing the finished shaped floor mats (A ) , and that A rotatable distributor (41) for connecting the presses (4,4a ...) to the stationary pressure medium supply is arranged coaxially with the turntable (1). 2. Device according to claim 1 with one or more presses, which has at least one .kühlbaren or heatable mold, characterized in that the rotatable distributor (41) has a stationary coolant or heating medium supply, preferably for liquids, via a supply line (44) a supply line (10) of the heating or cooling jacket (9) or the like. the mold and a return line (11) with a return 609835/0785 - ar - line (11) connects to a return line (45). 3. Device according to claim 1 or 2, characterized in that the rotatable distributor (41) above the turntable (1) is suspended. 4. Device according to claims 1 to 3, wherein at least a press has holding devices on at least two opposite side parts, thereby characterized in that the holding devices hold the corresponding edges of the floor mat during the Clamp the pressing process and have smooth-surfaced clamping jaws (21,22) which are attached to one of the two molds (8,13) or support frame (7,12) are attached, and that the clamping jaws (21, 22), preferably actuated by pressure medium drives (24), have a predetermined holding force Exercise on the floor mat (A) so that it counteracts the holding force between the clamping jaws when the molds are closed (21,22) is traceable. 5. Device according to one of claims 1 to 3, wherein at least one press on two opposite one another Has side parts holding devices, characterized in that the holding devices have the corresponding Clamp the edges of the floor mat during the pressing process without slipping, and away from the mold Acting forces can be moved towards the mold by tensile forces of the floor mat (1) occurring during the pressing process, each holding device having a number of gripping pins (32) has, which on a in the plane of the tensile forces of the floor mat (A) elastically movable support body, e.g. a Chain (31) are attached, 809835/0785 which, for example, via tension springs (33) against the Tensile forces of the floor mat is stretched. 6. Device according to claim 5, characterized in that the holding device has two elastically guided parallel movable support bodies, preferably chains (31) », which are provided with gripping pins (32), wherein the floor mat (A) can be clamped between the two support bodies, which are compressible by means of a drive, e.g. a pressure cylinder. 7. Device according to claim 6, characterized in that the elastically movable support body, for example the Chains (31), levers (40) at intervals through Axes of rotation (35) are interconnected, e.g. Chains (31) can be pressed onto one another about the axis of rotation (35). 609835/0785 Blank page